3 MTS To 4 MTS Type B Reducing Sleeves

• Type A – Oil Toughened (workshop grade) are manufactured from carbon steel – these are ground on the outside and have a reamed finish on the inside
• Type B – Hardened & Ground (premium grade) are manufactured from case hardened Hi Tensile steel – these are fully hardened and are ground on the inside and outside
• Drill Sleeves are used to adapt smaller Morse Taper Shank tools to larger machine spindles